Marsilius of Padua -1342?.
Defensor pacis /
Marsilio da Padova ; translation and introduction by Alan Gewirth 
. - Toronto : Buffalo : London : Published by University of Toronto Press,  1980 
. - XCIV, 450 p.  21 cm. 
 - Mediaeval Academy reprints for teaching .
<br/><label>  ISBN: </label>0-8020-6412-4